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<div class="header">
  <div class="headertitle"><div class="title">cvbsgenerator.h</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - &lt;http://www.fabgl.com&gt;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">  Copyright (c) 2019-2022 Fabrizio Di Vittorio.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">  All rights reserved.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"></span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">* Please contact fdivitto2013@gmail.com if you need a commercial license.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"></span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"></span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">* This library and related software is available under GPL v3.</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"></span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">  FabGL is free software: you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment">  it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">  the Free Software Foundation, either version 3 of the License, or</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">  (at your option) any later version.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"></span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">  FabGL is distributed in the hope that it will be useful,</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">  but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">  GNU General Public License for more details.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"></span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment">  You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment">  along with FabGL.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"> */</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="preprocessor">#include &lt;stddef.h&gt;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#if __has_include(&quot;esp32/rom/lldesc.h&quot;</span>)</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">  #include &quot;esp32/rom/lldesc.h&quot;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="preprocessor">  #include &quot;rom/lldesc.h&quot;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#include &quot;soc/i2s_struct.h&quot;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">#include &quot;soc/sens_struct.h&quot;</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="preprocessor">#include &quot;<a class="code" href="fabglconf_8h.html">fabglconf.h</a>&quot;</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="keyword">namespace </span>fabgl {</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment">// Note about *frameGroupCount* and PAL:</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="comment">//      It should be 4 (8 fields) to perform correct burst cycling (bruch sequence).</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment">// Note about *frameGroupCount* and NTSC:</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment">//      It should be 2 (4 fields) to perfom complete subcarrier cycle</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment">// Note about *sampleRate_hz*:</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment">//      Setting exactly 16000000 or 13333333.3334 will disable APLL, allowing second DAC channel to be usable</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment">//      Other values makes second DAC not usable!</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="keyword">struct </span>CVBSParams {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>  <span class="keywordtype">char</span> <span class="keyword">const</span> *    desc;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>  <span class="keywordtype">double</span>          sampleRate_hz;                  <span class="comment">// sample rate (see note above)</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>  <span class="keywordtype">double</span>          subcarrierFreq_hz;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>  <span class="keywordtype">double</span>          line_us;                        <span class="comment">// line duration</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>  <span class="keywordtype">double</span>          hline_us;                       <span class="comment">// half line duration (vsync and equalization pulse)</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>  <span class="keywordtype">double</span>          hsync_us;                       <span class="comment">// horizontal sync pulse duration</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>  <span class="keywordtype">double</span>          backPorch_us;                   <span class="comment">// back porch duration</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>  <span class="keywordtype">double</span>          frontPorch_us;                  <span class="comment">// front porch duration</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>  <span class="keywordtype">double</span>          hblank_us;                      <span class="comment">// horizontal blank after back porch to keep blank (adjusts horizontal position)</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>  <span class="keywordtype">double</span>          burstCycles;                    <span class="comment">// number of color burst cycles</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>  <span class="keywordtype">double</span>          burstStart_us;                  <span class="comment">// (breeze way) time from backPorch_us to color burst</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>  <span class="keywordtype">double</span>          fieldLines;                     <span class="comment">// number of lines in a field</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>  <span class="keywordtype">double</span>          longPulse_us;                   <span class="comment">// vertical sync, long pulse duration</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>  <span class="keywordtype">double</span>          shortPulse_us;                  <span class="comment">// vertical sync, short pulse duration (equalization pulse)</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>  <span class="keywordtype">double</span>          hsyncEdge_us;                   <span class="comment">// line sync falling and rising edges duration</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>  <span class="keywordtype">double</span>          vsyncEdge_us;                   <span class="comment">// short and long syncs falling and rising edge duration</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>  uint8_t         blankLines;                     <span class="comment">// vertical blank after vertical sync to keep blank (adjusts vertical position)</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>  uint8_t         frameGroupCount;                <span class="comment">// number of frames for each DMA chain. Controls how much fields are presented to getBurstPhase() function. See note above.</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>  int8_t          preEqualizingPulseCount;        <span class="comment">// vertical sync, number of short pulses just before vsync (at the beginning of field)</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>  int8_t          vsyncPulseCount;                <span class="comment">// vertical sync, number of long pulses (must be &gt;0 to generate first ISR)</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>  int8_t          postEqualizingPulseCount;       <span class="comment">// vertical sync, number of short pulses just after vsync</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>  int8_t          endFieldEqualizingPulseCount;   <span class="comment">// verticao sync, number of short pulses at the end of field</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>  uint8_t         syncLevel;                      <span class="comment">// DAC level of sync pulses</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>  uint8_t         blackLevel;                     <span class="comment">// DAC level of black</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>  uint8_t         whiteLevel;                     <span class="comment">// DAC level of white</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>  int8_t          burstAmp;                       <span class="comment">// DAC amplitude of color burst</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>  uint16_t        defaultVisibleSamples;          <span class="comment">// default horizontal visible samples</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>  uint16_t        defaultVisibleLines;            <span class="comment">// default vertical visible lines (per field)</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>  uint8_t         fieldStartingLine[2];           <span class="comment">// starting line of each field ([0]=first field, [1]=second field), in range 1..2</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>  uint8_t         fields;                         <span class="comment">// number of fields (max 2)</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>  uint8_t         interlaceFactor;                <span class="comment">// 1 = progressive, 2 = interlaced</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>  </div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>  <span class="comment">// params ranges:</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>  <span class="comment">//   frame         : 1 ... frameGroupCount</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>  <span class="comment">//   frameLine     : 1 ... fields * fieldLines</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>  <span class="comment">// ret:</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>  <span class="comment">//   false = line hasn&#39;t color burst</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> lineHasColorBurst(<span class="keywordtype">int</span> frame, <span class="keywordtype">int</span> frameLine) <span class="keyword">const</span> = 0;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>  </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>  <span class="comment">// phase in radians, red 0...1, green 0...1, blue 0...1</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>  <span class="keyword">virtual</span> <span class="keywordtype">double</span> getComposite(<span class="keywordtype">bool</span> oddLine, <span class="keywordtype">double</span> phase, <span class="keywordtype">double</span> red, <span class="keywordtype">double</span> green, <span class="keywordtype">double</span> blue, <span class="keywordtype">double</span> * <a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>) <span class="keyword">const</span> = 0;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>  </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>  <span class="comment">// phase in radians</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>  <span class="keyword">virtual</span> <span class="keywordtype">double</span> getColorBurst(<span class="keywordtype">bool</span> oddLine, <span class="keywordtype">double</span> phase) <span class="keyword">const</span> = 0;</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>  </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>};</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span> </div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="preprocessor">#define CVBS_ALLOCATED_LINES 4</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment">// increasing this value will require more memory available</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="preprocessor">#define CVBS_SUBCARRIERPHASES 100</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="preprocessor">#if CVBS_SUBCARRIERPHASES &gt; 128</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>  <span class="keyword">typedef</span> uint16_t scPhases_t;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>  <span class="keyword">typedef</span> uint8_t scPhases_t;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="comment">// value used in m_subCarrierPhases[] to indicate &quot;no burst&quot;</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span><span class="preprocessor">#define CVBS_NOBURSTFLAG (CVBS_SUBCARRIERPHASES * 2 - 1)</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span> </div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span><span class="preprocessor">#if FABGLIB_CVBSCONTROLLER_PERFORMANCE_CHECK</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>  <span class="keyword">extern</span> <span class="keyword">volatile</span> uint64_t s_cvbsctrlcycles;</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="keyword">typedef</span> void (*CVBSDrawScanlineCallback)(<span class="keywordtype">void</span> * arg, uint16_t * dest, <span class="keywordtype">int</span> destSample, <span class="keywordtype">int</span> scanLine);</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span> </div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span> </div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="keyword">class </span>CVBSGenerator {</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span> </div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span> </div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>  CVBSGenerator();</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>  <span class="comment">// gpio can be:</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>  <span class="comment">//    GPIO_NUM_25 : gpio 25 DAC connected to DMA, gpio 26 set using setConstDAC()</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>  <span class="comment">//    GPIO_NUM_26 : gpio 26 DAC connected to DMA, gpio 25 set using setConstDAC()</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>  <span class="keywordtype">void</span> setVideoGPIO(gpio_num_t gpio);</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>  </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>  <span class="keywordtype">void</span> setDrawScanlineCallback(CVBSDrawScanlineCallback drawScanlineCallback, <span class="keywordtype">void</span> * arg = <span class="keyword">nullptr</span>);</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span>  <span class="keywordtype">void</span> setup(<span class="keywordtype">char</span> <span class="keyword">const</span> * desc);</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span>  <span class="keywordtype">void</span> setup(CVBSParams <span class="keyword">const</span> * params);</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span>  </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span>  <span class="keyword">static</span> CVBSParams <span class="keyword">const</span> * getParamsFromDesc(<span class="keywordtype">char</span> <span class="keyword">const</span> * desc);</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span>  <span class="keywordtype">void</span> run(<span class="keywordtype">bool</span> subCarrierOnly = <span class="keyword">false</span>);</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span> </div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>  <span class="keywordtype">void</span> stop();</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>  </div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>  <span class="comment">// usable just when sampleRate is 16Mhz or 13.333Mhz!</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>  <span class="keywordtype">void</span> setConstDAC(uint8_t value) {</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>    <span class="comment">//WRITE_PERI_REG(I2S_CONF_SIGLE_DATA_REG(0), value &lt;&lt; 24);</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>    I2S0.conf_single_data = value &lt;&lt; 24;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>  }</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>  </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> VSync()                                         { <span class="keywordflow">return</span> s_VSync; }</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> field()                                          { <span class="keywordflow">return</span> s_field; }</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> frame()                                          { <span class="keywordflow">return</span> s_frame; }</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> frameLine()                                      { <span class="keywordflow">return</span> s_frameLine; }</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> subCarrierPhase()                                { <span class="keywordflow">return</span> *s_subCarrierPhase; }</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> pictureLine()                                    { <span class="keywordflow">return</span> s_scanLine; }</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> lineSwitch()                                    { <span class="keywordflow">return</span> s_lineSwitch; }</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>  <span class="keyword">static</span> scPhases_t * lineSampleToSubCarrierSample()          { <span class="keywordflow">return</span> (scPhases_t*) s_lineSampleToSubCarrierSample; }</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> firstVisibleSample()                             { <span class="keywordflow">return</span> s_firstVisibleSample; }     <span class="comment">// first visible sample in a line</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>  </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>  <span class="keywordtype">int</span> visibleLines()                                          { <span class="keywordflow">return</span> m_visibleLines; }           <span class="comment">// visible lines in a field</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>  <span class="keywordtype">int</span> visibleSamples()                                        { <span class="keywordflow">return</span> s_visibleSamplesCount; }    <span class="comment">// visible samples in a line</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>    </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>  CVBSParams <span class="keyword">const</span> * params()                                 { <span class="keywordflow">return</span> m_params; }</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span> </div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span> </div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span> </div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>  <span class="keywordtype">void</span> runDMA(lldesc_t <span class="keyword">volatile</span> * dmaBuffers);</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>  <span class="keyword">volatile</span> lldesc_t * setDMANode(<span class="keywordtype">int</span> index, <span class="keyword">volatile</span> uint16_t * buf, <span class="keywordtype">int</span> len);</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>  <span class="keywordtype">void</span> closeDMAChain(<span class="keywordtype">int</span> index);</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>  <span class="keywordtype">void</span> buildDMAChain();</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>  <span class="keywordtype">void</span> buildDMAChain_subCarrierOnly();</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>  <span class="keywordtype">void</span> addExtraSamples(<span class="keywordtype">double</span> us, <span class="keywordtype">double</span> * aus, <span class="keywordtype">int</span> * node);</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> ISRHandler(<span class="keywordtype">void</span> * arg);</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span> </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span> </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>  <span class="comment">// live counters</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span>           s_scanLine;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> <span class="keywordtype">bool</span>          s_VSync;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span>           s_field;                        <span class="comment">// current field: 0 = first field, 1 = second field</span></div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span>           s_frame;                        <span class="comment">// current frame: 0 to m_params-&gt;frameGroupCount - 1</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span>           s_frameLine;                    <span class="comment">// current frame line: 0 to m_params-&gt;fieldLines * 2 - 1. Integer part only (ie line 200.5 will be 200). This is not equivalent to image &quot;scanline&quot; in case of interlaced fields.</span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span>           s_activeLineIndex;              <span class="comment">// current active line index: 0... active line index (reset for each field)</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> scPhases_t *  s_subCarrierPhase;              <span class="comment">// ptr to current subcarrier phase: sample index in m_colorBurstLUT[] LUT, 0..CVBS_SUBCARRIERPHASES*2</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> <span class="keywordtype">bool</span>          s_lineSwitch;                   <span class="comment">// line switch</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span> </div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>  gpio_num_t                    m_gpio;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>  <span class="keywordtype">bool</span>                          m_DMAStarted;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>  lldesc_t <span class="keyword">volatile</span> *           m_DMAChain;</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>  </div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>  <span class="comment">// signals buffers</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>  <span class="keyword">volatile</span> uint16_t *           m_lsyncBuf;                     <span class="comment">// vertical blank, long pulse buffer</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>  <span class="keyword">volatile</span> uint16_t *           m_ssyncBuf;                     <span class="comment">// vertical blank, short pulse buffer (equalizing pulse)</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>  <span class="keyword">volatile</span> uint16_t * *         m_lineBuf;                      <span class="comment">// hsync + back porch + line + front porch</span></div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>  </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>  <span class="comment">// not allocated buffers</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>  <span class="keyword">volatile</span> uint16_t *           m_blackBuffer;                  <span class="comment">// derived from ending black part of m_ssyncBuf</span></div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>  <span class="keywordtype">int</span>                           m_blackBufferLength;            <span class="comment">// number of available samples in m_blackBuffer</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>  </div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>  </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>  intr_handle_t                 m_isr_handle;</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> int16_t       s_visibleSamplesCount;          <span class="comment">// visible samples in a line</span></div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> int16_t       s_firstVisibleSample;           <span class="comment">// first visible sample (0...)</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>  CVBSDrawScanlineCallback      m_drawScanlineCallback;</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>  <span class="keywordtype">void</span> *                        m_drawScanlineArg;</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>  <span class="keyword">volatile</span> int16_t              m_visibleLines;                 <span class="comment">// visible lines in a field</span></div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>  int16_t                       m_firstVisibleFieldLine;        <span class="comment">// 1...</span></div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>  int16_t                       m_lastVisibleFieldLine;         <span class="comment">// 1...</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>  <span class="keyword">volatile</span> int16_t              m_firstActiveFrameLine[2];      <span class="comment">// first active frame line for specified field (0..) in range 0..</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>  <span class="keyword">volatile</span> int16_t              m_firstVisibleFrameLine[2];     <span class="comment">// first visible frame line for specified field (0..) in range 0..</span></div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>  <span class="keyword">volatile</span> int16_t              m_lastVisibleFrameLine[2];      <span class="comment">// last visible frame line for specified field (0..) in range 0..</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>  <span class="keyword">volatile</span> int16_t              m_startingScanLine[2];          <span class="comment">// starting scanline for each field (0..) in range 0..</span></div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>  <span class="keyword">volatile</span> scPhases_t *         m_subCarrierPhases[4];          <span class="comment">// subcarrier phase for [frame][frameLine], in samples from start of hsync</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>  <span class="keyword">volatile</span> uint16_t             m_colorBurstLUT[2][CVBS_SUBCARRIERPHASES * 2];</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>  <span class="keyword">volatile</span> uint16_t             m_firstColorBurstSample;        <span class="comment">// sample where color burst starts (starting from hsync)</span></div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>  <span class="keyword">volatile</span> uint16_t             m_lastColorBurstSample;         <span class="comment">// sample where color burst ends</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>  <span class="keyword">volatile</span> <span class="keywordtype">int</span>                  m_linesPerFrame;                <span class="comment">// number of lines in a frame</span></div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>  <span class="keyword">static</span> <span class="keyword">volatile</span> scPhases_t *  s_lineSampleToSubCarrierSample; <span class="comment">// converts a line sample (full line, from hsync to front porch) to m_colorBurstLUT[] item</span></div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>  <span class="keywordtype">double</span>                        m_actualLine_us;                <span class="comment">// actual value of m_params-&gt;line_us, after samples alignment</span></div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>  <span class="keywordtype">double</span>                        m_actualHLine_us;               <span class="comment">// actual value of m_params-&gt;hline_us, after samples alignment</span></div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span>  <span class="keywordtype">double</span>                        m_sample_us;                    <span class="comment">// duration of a sample</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span>  <span class="keywordtype">bool</span>                          m_firstActiveFieldLineSwitch[4][2];  <span class="comment">// line switch state for first active line at frame (0..) and field (0..)</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span>  </div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>  CVBSParams <span class="keyword">const</span> *            m_params;                       <span class="comment">// decides the CVBS standard (PAL, NTSC...)</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>  </div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>};</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span> </div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span> </div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span>} <span class="comment">// namespace fabgl</span></div>
<div class="ttc" id="adisplaycontroller_8h_abe4637362df8e341470401813999dd17_html_abe4637362df8e341470401813999dd17"><div class="ttname"><a href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a></div><div class="ttdeci">int16_t Y</div><div class="ttdef"><b>Definition:</b> <a href="displaycontroller_8h_source.html#l00001">displaycontroller.h:1</a></div></div>
<div class="ttc" id="afabglconf_8h_html"><div class="ttname"><a href="fabglconf_8h.html">fabglconf.h</a></div><div class="ttdoc">This file contains FabGL library configuration settings, like number of supported colors,...</div></div>
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